linux-kernel - Re: [PATCH 0/5] Some vmevent fixes...

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Message-ID: <CAOJsxLHkzubReaR0utB4xdage0Omb4r=jhXCLwXQ8XOSct4LGg@mail.gmail.com>
Date:	Tue, 5 Jun 2012 10:53:41 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Anton Vorontsov <cbouatmailru@...il.com>
Cc:	Minchan Kim <minchan@...nel.org>,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	Leonid Moiseichuk <leonid.moiseichuk@...ia.com>,
	John Stultz <john.stultz@...aro.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	patches@...aro.org, kernel-team@...roid.com
Subject: Re: [PATCH 0/5] Some vmevent fixes...

On Mon, Jun 4, 2012 at 4:35 PM, Anton Vorontsov <cbouatmailru@...il.com> wrote:
>> I don't mean VMEVENT_ATTR_LOWMEM_PAGES but following as,
>>
>> VMEVENT_ATTR_NR_FREE_PAGES
>> VMEVENT_ATTR_NR_SWAP_PAGES
>> VMEVENT_ATTR_NR_AVAIL_PAGES
>>
>> I'm not sure how it is useful.
>
> Yep, these raw values are mostly useless, and personally I don't use
> these plain attributes. I use heuristics, i.e. "blended" attributes.
> If we can come up with levels-based approach w/o using vmstat, well..
> OK then.

That's what Nokia's lowmem notifier uses. We can probably drop them
once we have something else they could use.
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